[PATCH v2 1/3] i2c: designware: Enable async suspend / resume of designware devices
From: Rajat Jain <hidden>
Date: 2021-10-25 21:35:44
Also in:
linux-i2c, lkml
Subsystem:
i2c subsystem, i2c subsystem host drivers, synopsys designware i2c driver, the rest · Maintainers:
Andi Shyti, Mika Westerberg, Linus Torvalds
Mark the designware devices for asynchronous suspend. With this, the resume for designware devices does not get stuck behind other unrelated devices (e.g. intel_backlight that takes hundreds of ms to resume, waiting for its parent devices). Signed-off-by: Rajat Jain <redacted> Acked-by: Jarkko Nikula <redacted> Tested-by: Jarkko Nikula <redacted> --- v2: Add Jarkko's ack / tested by drivers/i2c/busses/i2c-designware-platdrv.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 21113665ddea..2bd81abc86f6 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c@@ -293,6 +293,8 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) DPM_FLAG_MAY_SKIP_RESUME); } + device_enable_async_suspend(&pdev->dev); + /* The code below assumes runtime PM to be disabled. */ WARN_ON(pm_runtime_enabled(&pdev->dev));
--
2.33.0.1079.g6e70778dc9-goog